Yes, it's really hard to know whether OGG is running in classic or integrated mode. However, I see a way to tell.
GGSCI (primary01) 2> info ERPAPP_E
EXTRACT ERPAPP_E Last Started 2022-11-15 08:46 Status RUNNING
Checkpoint Lag 00:00:00 (updated 00:00:01 ago)
Process ID 115833
Log Read Checkpoint Oracle Redo Logs
2023-12-10 16:48:53 Thread 1, Seqno 50262, RBA 331209728
SCN 4.563172902 (17743042086)
Log Read Checkpoint Oracle Redo Logs
2023-12-10 16:48:55 Thread 2, Seqno 44103, RBA 105759232
SCN 4.563172906 (17743042090)
If there's no "integrated" such keyword, it's classic mode.